Yucheon Naengmyeon Bongcheon is a naengmyeon restaurant in an alley near Seoul National University Station in Gwanak-gu, Seoul. Its signature combination is cold naengmyeon with a sweet-and-sour chilled broth, served with gunmandu. The broth is seasoned well enough without added mustard or vinegar, and the gunmandu are crisp outside and chewy inside. When delivery orders pile up, the dining room becomes cluttered and loud.